lefebvre



April 2, 1929.

A. LEFEBVRE 1,707,915

LUBRICATING APPARATUS WITH MULTIPLE PUMPS Filed March 30, 1928 2 Sheets-Sheet 1 April 2, 1929. A. LEFEBVRE LUBRICATING APPARATUS WITH MULTIPLE PUMPS Filed March 30, 1928 2 Sheets-Sheet 2 iliatente'd A r, 2, 19-29.

' f V In lubricating apparatusadapted to de h li-ver' consistent grease underpressure, by the ius'ej-of a certain number of individualpumps under r-the' pro er control of the machine,

" ofaeach of the pumps.'- The grease" settles in' -afclefectivemanner, leavlng air pockets,

l u andall means for obviating .this' difliculty f expensive yior' their operation is defective.

entin'vention'.

Q15; "1 cactuated suitable means, and the said i; a certain number arefixed and the rest mov .v able,:"the*flatter"beingdriven forinsta'nce 2 a central sjhaft actuating the pum'ps.

i The movable scrapers drive forward the i c'onsistent'grea'se;lthey are inclinedin such manner that thegrease will' tend to pass below the 7 'alonef'they would able scrapers. "At each revolution, since the trary to the movable scrapersithe greasewill accumulate thereon until the rotation brings itheyflwillj take up thei grease and will again drive it towards thelpumps. V y 7 o By thisarrangement of fixed and movable scrapersthe'pressure is increased; in such mannerithat the grease accumulates at the end of'the recipient an'd'no air pockets will beformed. i v

In certain cases, thetarrangement' may be still insufficient to cause the grease to flow regula rly through the orifices corresponding to thepumps,these latter having necessarily ya reducedsize to allow the proper adjust- I ment 'an'dto obtain a delivery of grease according to needle. t *l; To oblige the grease to pass through the saidforifices andjto entirely fill the pumps, I may provide in the end of the main body or grease recipient suitable chambers correans-Em ,LEF BvRE, or PRE-s'TJ-GEI AIs; rnancn;

v- V 55} great{difii'cultiesare always found, due to; gth'enatureofthe said grease, in the'supp'ly have been found too complex and therefore All such' defect'sfare obviated by the pres- 1 Upon a cylindrical pump barrel or main 7 body are mounted various individualpumps;

' v bodycontains a'plurality of scrapers whereof scrapers, being thus brought to 11 119 end of the apparatus, but when used not produce the necessary pressure; to force the-{said grease into the pumps; for at a certain time the grease forms a'ising-le bo'dy with'thescrapers and is thus' V drawmin the circular direc'tion,-so that'fthe scrapers will not drive'it' towards the pu ps-; i

It is therefore advantageous to use stationary L obstacles or scrapers between the said mov the movable scrapers tothis' point so that is i iiiIBRIeA T INq Amen ties mmsm] ruivrrs.

sp onding to' the respective pumps, each chain I ber belng' open at thetop closedbelow the pump'. The lower scraperis preferably, adapted to oscillate through a certain angle upon 1ts ax s, and it is downwardly urged byia spring; I. I I chamber, th'e'sprmg forces the scraper- ;1n to theirecess of this chamber; the partition betwee this chamber and the'next' will then raise the said scraper, and due to th s motion the grease-willfbe assembled between I the a I scraper plate and-the partition of the chamber, thus producing an 7 EtdClllJlOllttL pressure 1n the saldchaiiiber amt assuring an approved circulation of the 'grease into the respective pump.

lVhen'proceeding upon each,

If the "pumps employed are'iiotadapted for v theuse ofchambers;theiendof the main body maybe properly shaped by; means of saw cuts, and th'eend' of each saw cut will correspend to thefeeding orifice, fol-the respectivefpump;l The oscillating scraper operates" v in the same conditions 'as' above mentioned 1toffershke results as to additional co ns supply" i1r 1 ;an'- efficient manner;

The appended {drawinges' show way'iof v I Fig; 4 I

Fig. 5 at -view aaalogous; to Fi ar la tiv'e to amodified construction; v v v H 'The apparatus emnprisesa main body 1 upon which are mounted the pumps 6 under the control of a cam 7 disposed on the central shaft 2. V The said'pumps are preferably of the type represented, thus comprising a pump barrel 8, astationary piston 9,

' and a movable piston 10 for the delivery; 25

represent the inlet orifices, 26 is the fclack valve under thecontrol of aspring. 27 and 28 is the delivery conduit. A knob 11 Serves to adjust the position of the piston 9 with reference to the piston 10, 'in' such manner as to increase or diminish; the amount of lubricant supplied.

At the end of the barrel lare provided the cha1nbers12, inthe same number as the pumps, said chambers being separated from one another by the vertical partitions 13.'

is a on; the line n so pression of the grease and assures the'proper V 1 es axis I of driving 1 iv f Abovfbhe Said kshmhbers; are @mam certain ""nuinber' of; Y scrapers, three for: instance, 15-1617 the scrapers 151md"17 the scraper '16' if s"loose on 'thejjsha ft and is helclfby a stop 18 memrti1=m fl1ebafie1 1. -The first scraperf makes frietionr contact withthe s'aid ehznhbers, "as"ab'0ve mentioned; for this] puppose -lit 7is, :,piv0ta11'y.

With'and q phtezsliehhs 1'7 Siibsti'tuted; .The

numbernf the scrapers may Nayy atccoiifd il lg v from the, eh d, the: first s'ergperfis jlw ey s. V movable and "the second Stationary.

time the set (if scrapers will: have wheel; tici-ty required for the prepefiun'c'tiempg massby the-Said r'et'ating scraper.

2. Alluhnicatilgg apparatus pl ovided a 'plfirality "of individual pum as, a compris- A sciepef for 'adistance Sifificient ,te dispeset-he splring i a eea genie 'iwef rt ef.-;sai&- 'i ipint, f a rifving' .shaft mounted at the; centre of mid 'reeipient, apart; djgpdsed/on said shaft hast time rotatable scraper mountedmnthe said sha it; itflbeigg invei-sely "ih'li'fid iz'vith feferenee to the ffixed scraper d p eibd wit e laswri r alid fa ,stetioha ry scraper. V contml y directian V to ggpmediqgmd I 

